Low power consumption method of underwater signal acquisition recording processing system

Abstract

The application provides a low-power consumption method of an underwater signal acquisition recording processing system, and relates to the technical field of electronic system power consumption optimization. The low-power consumption method of the underwater signal acquisition recording processing system comprises a water sound signal data receiving sensor, a water sound signal data conditioning and acquisition module, a signal processing module, a storage module, a main control module, a power management module and other auxiliary working modules. By designing a control system, a signal processing system, a storage system and a peripheral sensing system in the system, low-power consumption control covers multiple stages and multiple working scenes of device work, effectively solves the power consumption problem of an underwater complex system during work in different scenes, realizes effective use of a battery, and prolongs device working time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic system power consumption optimization, in particular to a low-power method of an underwater signal acquisition and recording processing system. BACKGROUND

[0002] Two-thirds of the earth's area is covered by oceans, and today's seabed observation technology has become a new hotspot. Submersible buoy systems are important technical equipment for ocean observation and underwater detection, with the characteristics of long-term, continuous, synchronous and automatic comprehensive monitoring of ocean hydrology, weather, ship signals, biological targets and other elements in harsh marine environment conditions, and are an important means of offshore monitoring. The underwater signal acquisition and recording system, as a load of the submersible buoy, mainly monitors the underwater acoustic signals emitted by ships or other sonar devices in the water.

[0003] During the underwater operation of the underwater signal acquisition and recording system, the power supply is derived from the quantitative disposable battery carried by the submersible buoy. Due to the limitation of the energy of the submersible buoy, in order to prolong the working time of the equipment in the water, low-power design of the system must be carried out. The current low-power design scheme mainly targets a certain circuit chip or a simple scene. With the increasing complexity of the electronic system of underwater equipment, low-power design needs to be carried out for complex electronic systems or complex working scenes.

[0004] Patent No. CN 104375619 A discloses a "low-power design method for single-chip microcomputer system", which takes the energy consumption of the single-chip microcomputer system as the main technical index, considers different logic circuit types, and adjusts the working voltage of the system or some components according to the actual situation of the load during the operation of the single-chip microcomputer system, so as to continuously change the working voltage and achieve the purpose of reducing energy consumption. According to the actual situation of the load, the working frequency of the entire system or some components is adjusted by using a multiple change, so as to achieve the purpose of reducing energy consumption. However, the system only contains a single-chip microcomputer, and the single-chip microcomputer realizes low power consumption by adjusting the voltage or working state of other modules.

[0005] Patent No. CN 109613970 A discloses a "low-power processing method based on FPGA and DSP architecture", which includes the following steps: after the system is powered on, the FPGA completes its configuration and the DSP completes the initialization, and the FPGA and DSP are in low-power working mode; when the DSP receives external data, the low-power mode is interrupted and jumps to normal working mode; when the DSP detects external normal working instructions, the FPGA is controlled to jump to normal working mode to complete normal timing work; after the normal timing work is completed, the FPGA enters low-power working mode according to the external control of the DSP or automatically; this method only involves FPGA and DSP, and it is difficult to meet the requirements of low-power design of the entire system.

[0006] Patent No. CN 109581903 A discloses "a low-power device of underwater glider controller and its control method", the device comprises: a microprocessor unit, a power conversion unit, a storage management unit, a peripheral management unit, a serial port expansion unit. The power conversion unit selects a high-efficiency LM2672 voltage conversion chip, and the microprocessor unit controls the working state of the power conversion unit; the storage management unit selects an SD card as the storage medium, when the SD card is in standby state, the microprocessor unit closes the working power supply of the SD card, so that it enters low-power state; the peripheral management unit selects a CMOS field effect tube with low on-resistance, and designs a peripheral power supply switch circuit, and the microprocessor unit controls the working state of the peripheral management unit; the serial port expansion unit selects a WK21XX series chip with low-power mode, expands the number of controller serial ports, and the microprocessor unit changes the working state of the WK21XX register by modification; the circuit in the scheme is too simple, only one processor is used to control the whole system, and there is no signal processing flow; the working mode of the glider is single, which is low-power standby mode when diving and floating, and working mode when communicating.

[0007] Therefore, we have developed a new low-power method of underwater signal acquisition, recording and processing system. SUMMARY

[0008] (I) Technical problems solved

[0009] In view of the shortcomings of the prior art, the present application provides a low-power method of underwater signal acquisition, recording and processing system, which solves the problem of high power consumption of underwater complex system during work in different scenes, realizes effective use of battery and prolongs the working time of the equipment.

[0010] (II) Technical scheme

[0011] To achieve the above purpose, the present application is realized by the following technical scheme: a kind of underwater signal acquisition, recording and processing system, including underwater acoustic signal data receiving sensor, underwater acoustic signal data conditioning acquisition module, signal processing module, storage module, main control module, power management module and other auxiliary working module;

[0012] The underwater acoustic signal data receiving sensor is used to receive the underwater acoustic signals generated by the surface ships, underwater targets and aquatic organisms;

[0013] The underwater acoustic signal data conditioning acquisition module is used for underwater acoustic signal amplification, filtering and AD conversion;

[0014] The signal processing module is used for underwater acoustic signal detection and feature extraction;

[0015] The storage module is used to store system running log data, underwater acoustic signal raw data and underwater acoustic signal feature data.

[0016] The main control module is used for controlling the system working mode according to the received instruction or the signal feature detection;

[0017] The power management module is responsible for voltage conversion of the battery power supply and power supply for other units;

[0018] The other auxiliary working modules include a pressure sensor and a Beidou positioning module;

[0019] Further, the pressure sensor is used for obtaining the working depth, and the Beidou positioning module is used for obtaining the Beidou position information.

[0020] Preferably, the signal processing module includes MCU, FPGA and DSP+ARM;

[0021] Further, the MCU selects an ultra-low-power MSP432P4111 series processor, the FPGA selects an ultra-low-power iCE40HX series processor, and the DSP+ARM selects a low-power floating-point digital signal processor OMAP-L138 for underwater acoustic communication signal detection and identification.

[0022] Preferably, the main control module selects an STM32F767IGT6 low-power high-performance microprocessor.

[0023] Preferably, the underwater signal acquisition recording processing system has multiple working modes, including a standby module, a data continuous acquisition storage and non-analysis mode, a data continuous acquisition analysis and storage mode and a trigger mode.

[0024] A low-power method of an underwater signal acquisition recording processing system, comprising the following specific steps:

[0025] S1. During the deployment and recovery of the submersible, or when the submersible is underwater but does not need to carry out signal receiving tasks, set it to standby working mode, at this time only the main control module is continuously powered on, the pressure sensor is powered on for monitoring at intervals of 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water;

[0026] S2. When the submersible performs a short task and the task target is not clear, the working mode of the submersible under water is set to a data continuous collection storage and non-analysis mode, only data receiving, collection and storage are performed, at this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and collection module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on for monitoring at intervals of 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, the Beidou module is powered off after the submersible is put into water, and the signal processing module is powered off; in order to further reduce power consumption, the underwater acoustic data is first stored in an SD card, and the data is stored in batches into a hard disk at intervals of 15 minutes, so as to reduce the power consumption of hard disk writing; after the submersible is recovered, the original data is exported, the storage hard disk is emptied, and the submersible can be continuously used, so that the power consumption of the equipment is effectively saved;

[0027] S3. When the submersible performs a long task and the task target is basically clear, the working mode of the submersible under water is set to a data continuous collection and analysis storage mode, and the underwater signal needs to be processed autonomously, at this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and collection module is powered on, the signal processing module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on for monitoring at intervals of 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water; in order to further reduce power consumption, the underwater acoustic data is first stored in an SD card, and the data is stored in batches into a hard disk at intervals of 15 minutes, so as to reduce the power consumption of hard disk writing; after the submersible is recovered, the original data and the underwater data processing result are exported, and the intelligence information can be quickly obtained;

[0028] S4. When the submersible performs an ultra-long task and the task target is relatively vague, the working mode of the submersible under water is set to a trigger mode, the underwater signal collection, recording and processing system first performs low-power consumption detection on useful signals, at this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and collection module is powered on, the signal processing module MCU is powered on, the main control module is powered on, the pressure sensor is powered on for monitoring at intervals of 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water, the signal processing module FPGA+DSP is powered off, and the storage module is powered off; when the signal is detected, signal recognition and data storage are started, at this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and collection module is powered on, the signal processing module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on for monitoring at intervals of 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water; in order to further reduce power consumption, the underwater acoustic data is first stored in an SD card, and the data is stored in batches into a hard disk at intervals of 15 minutes, so as to reduce the power consumption of hard disk writing; after the submersible is recovered, the original data and the underwater data processing result are exported, and the intelligence information can be quickly obtained.

[0029] Preferably, the short-term task time of the S2 is generally one week.

[0030] Preferably, the long-term task time of the S3 is generally one week to one month.

[0031] Preferably, the super-long-term task time of the S4 is generally greater than one month.

[0032] (III) Beneficial Effects

[0033] The present application provides a low-power method of an underwater signal acquisition recording processing system.

[0034] 1. The low-power method of the underwater signal acquisition recording processing system, by designing a control system, a signal processing system, a storage system and a peripheral sensing system in the system, the low-power control covers multiple stages and multiple working scenes of the device work, effectively solves the power consumption problem of the underwater complex system during work in different scenes, realizes the effective use of the battery, and prolongs the working time of the device.

[0035] 2. The low-power method of the underwater signal acquisition recording processing system meets the application requirements of high performance, long working time and complex working scene of the underwater signal acquisition recording processing system, and also realizes the goal of low-power design of the system. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The present application is an underwater signal acquisition analysis processing system structure principle diagram;

[0037] Figure 2 The present application is an underwater signal acquisition analysis processing system core system working flow chart;

[0038] Figure 3 The present application is an underwater signal acquisition analysis processing system peripheral system working flow chart;

[0039] Figure 4 The present application is an underwater signal acquisition analysis processing system trigger flow chart. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0041] Embodiment:

[0042] As Figures 1-4As shown, the embodiment of the present application provides an underwater signal acquisition and recording processing system, comprising an underwater acoustic signal data receiving sensor, an underwater acoustic signal data conditioning and acquisition module, a signal processing module, a storage module, a main control module, a power management module and other auxiliary working modules.

[0043] The underwater acoustic signal data receiving sensor is used for receiving underwater acoustic signals generated by surface ships, underwater targets, aquatic organisms and the like.

[0044] The underwater acoustic signal data conditioning and acquisition module is used for underwater acoustic signal amplification, filtering, AD conversion and the like.

[0045] The signal processing module is used for underwater acoustic signal detection, identification and feature extraction.

[0046] The storage module is used for storing system operation log data, underwater acoustic signal raw data and underwater acoustic signal feature data.

[0047] The main control module is used for controlling the system working mode according to the received instructions or detection signal features.

[0048] The power management module is used for voltage conversion of the battery power supply to supply power to other units.

[0049] The other auxiliary working modules include a pressure sensor and a Beidou positioning module, the pressure sensor is used for obtaining the working depth, and the Beidou positioning module is used for obtaining the Beidou position information.

[0050] As shown, Figure 1 The underwater acoustic signal data receiving sensor, the underwater acoustic signal data conditioning and acquisition module, the signal processing module, the storage module, the main control module and the other auxiliary working modules are powered by the power management module.

[0051] The signal end of the underwater acoustic signal data receiving sensor is connected to the underwater acoustic signal data conditioning and acquisition module, and after AD conversion, it becomes a digital signal, which is stored in an SD card and transmitted to the signal processing module through a SPI high-speed data interface. After 15 minutes of data accumulation, the SD card data is batch stored in a storage hard disk. The single arrow in the figure represents the data transmission direction.

[0052] The main control module controls the power-on and power-off of each module through the power management module, and can also obtain the voltage information of each module, which is represented by a double-headed arrow in the figure.

[0053] The main control module connects the signal processing module through a serial port, and sends the working mode to the signal processing module in the form of a serial port instruction, which is represented by a hollow arrow in the figure. The signal processing module first completes the power-on of the MCU, and then completes the power-on and power-off of the FPGA and DSP according to the set working mode.

[0054] The signal processing module MCU selects an ultra-low-power MSP432P4111 series processor, the FPGA selects an ultra-low-power iCE40HX series processor, and the DSP+ARM selects a low-power floating-point digital signal processor OMAP-L138 for underwater acoustic communication signal detection and identification.

[0055] The main control module selects an STM32F767IGT6 low-power high-performance microprocessor.

[0056] As shown in Figure 2 The underwater signal acquisition and recording processing system includes four working stages of preparation before deployment, deployment, underwater work and recovery during use, and the core system of the underwater signal acquisition and recording processing system has multiple working modes during underwater work: standby module, data continuous acquisition and storage without analysis mode, data continuous acquisition and storage mode and trigger mode.

[0057] The low-power method of the underwater signal acquisition and recording processing system comprises the following specific steps:

[0058] S1. The submersible is set to standby mode during deployment and recovery, or the submersible is underwater but does not need to carry out signal receiving tasks, at this time only the main control module is continuously powered on, the pressure sensor is powered on for monitoring every 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water;

[0059] S2. When the submersible performs a short task (about a week) and the task target is not clear, the working mode of the submersible underwater is set to data continuous acquisition and storage without analysis mode, only data receiving, acquisition and storage are performed, at this time the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and acquisition module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on for monitoring every 15 minutes, the Beidou positioning module is powered on when the submersible is on the water surface, the Beidou module is powered off after the submersible is put into water, and the signal processing module is powered off; In order to further reduce power consumption, the underwater acoustic data is first stored in the SD card, the data is stored in batches into the hard disk every 15 minutes, and the power consumption of the hard disk is reduced; After the submersible is recovered, the original data is exported, the storage hard disk is emptied, and the submersible can be used continuously, effectively saving the power consumption of the equipment;

[0060] S3. When the long task (one week to one month) is executed by the submersible and the target of the task is basically clear, the working mode of the submersible under water is set as a data continuous collection, analysis and storage mode, the autonomous processing of the underwater signal needs to be completed, at this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and collection module is powered on, the signal processing module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on at intervals of 15 minutes for monitoring, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water; in order to further reduce the power consumption, the underwater acoustic data is first stored in the SD card, the data is stored in batches into the hard disk at intervals of 15 minutes, and the power consumption of the hard disk is reduced; after the submersible is recovered, the original data and the underwater data processing result are exported, and the intelligence information can be quickly obtained;

[0061] S4. When the long task (one week to one month) is executed by the submersible and the target of the task is basically clear, the working mode of the submersible under water is set as a data continuous collection, analysis and storage mode, the autonomous processing of the underwater signal needs to be completed, at this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and collection module is powered on, the signal processing module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on at intervals of 15 minutes for monitoring, the Beidou positioning module is powered on when the submersible is on the water surface, and the Beidou module is powered off after the submersible is put into water; in order to further reduce the power consumption, the underwater acoustic data is first stored in the SD card, the data is stored in batches into the hard disk at intervals of 15 minutes, and the power consumption of the hard disk is reduced; after the submersible is recovered, the original data and the underwater data processing result are exported, and the intelligence information can be quickly obtained.

[0062] As shown in Figure 3 , the underwater signal collection, recording and processing system needs other auxiliary working modules (pressure sensor and Beidou positioning module) to provide device depth and position information in work, the device is powered on before deployment, the Beidou positioning module is turned on for Beidou positioning and time service, after the positioning and time service are completed, the Beidou module is powered off; the pressure sensor is powered on and off once at intervals of 15 minutes, and the current depth value is read by the main control module.

[0063] The Beidou positioning module is powered off during the device deployment and underwater work, and the pressure sensor is powered on and off once at intervals of 15 minutes, and the current depth value is read by the main control module.

[0064] After the equipment completes the underwater task, the release instruction is sent to recover the equipment. When the equipment floats to the depth of 20% of the deployment depth, the pressure sensor and the Beidou positioning module remain powered on to ensure the safety of the equipment.

[0065] As shown in Figure 4 After the equipment is powered on, the setting working mode instruction is sent to the main control module to set the working mode to the trigger mode. The main control module powers on the data receiving sensor, the data conditioning and collecting module and the signal processing module through the power management module. The main control module sends the working mode setting instruction to the signal processing module through the serial port. The signal processing module starts the MCU for signal detection according to the received serial port instruction. The line in the figure represents the operation after the MCU detects the signal. The MCU controls the FPGA+DSP to be powered on for signal recognition. The current of the signal processing module becomes large, and a trigger signal is sent to the main control module. After receiving the trigger signal, the main control module starts the storage module for data storage through the power management module. In order to further reduce the power consumption, the underwater acoustic data is first stored in the SD card. The data is stored in the hard disk in batches at intervals of 15 minutes. The power consumption of the hard disk is reduced. After a period of time without signal, the FPGA+MCU is powered off. The MCU performs low-power signal detection and sends a trigger stop signal to the main control module. The main control module powers off the storage module through the power management module. The system returns to the trigger waiting state.

[0066] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A low-power design method for an underwater signal acquisition, recording, and processing system, characterized in that: The specific steps include the following: S1. During the deployment and retrieval of the underwater buoy, or when the underwater buoy is underwater but does not need to carry out signal receiving tasks, it is set to standby mode. At this time, only the main control module is continuously powered on, the pressure sensor is powered on every 15 minutes for monitoring, the Beidou positioning module is powered on when the underwater buoy is on the water surface, and the Beidou module is powered off after the underwater buoy enters the water. S2. When the underwater glider is performing a short-term task and the task objective is unclear, the underwater glider's working mode is set to continuous data acquisition and storage without analysis mode. It only receives, acquires and stores data. At this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and acquisition module is powered on, the storage module is powered on, and the main control module is powered on. The pressure sensor is powered on for monitoring every 15 minutes. When the underwater glider is on the surface, the Beidou positioning module is powered on. After the underwater glider enters the water, the Beidou module and the signal processing module are powered off. S3. When the underwater glider is performing a long-term mission and the mission objective is basically clear, the underwater glider's working mode is set to continuous data acquisition, analysis and storage mode. It needs to complete the autonomous processing of underwater signals. At this time, the underwater acoustic signal data receiving sensor is powered on, the underwater acoustic signal data conditioning and acquisition module is powered on, the signal processing module is powered on, the storage module is powered on, the main control module is powered on, the pressure sensor is powered on for monitoring every 15 minutes, the Beidou positioning module is powered on when the underwater glider is on the surface, and the Beidou module is powered off after the underwater glider enters the water. S4. When the underwater glider performs an extremely long mission and the mission objective is relatively unclear, the underwater glider's working mode is set to trigger mode. The underwater signal acquisition, recording, and processing system first performs low-power detection of useful signals. At this time, the underwater acoustic signal data receiving sensor, the underwater acoustic signal data conditioning and acquisition module, the signal processing module MCU, and the main control module are powered on. The pressure sensor is powered on and monitored every 15 minutes. When the underwater glider is on the surface, the Beidou positioning module is powered on. After the underwater glider enters the water, the Beidou module is powered off, the signal processing module FPGA+DSP is powered off, and the storage module is powered off. When a signal is detected, signal recognition and data storage are started. At this time, the underwater acoustic signal data receiving sensor, the underwater acoustic signal data conditioning and acquisition module, the signal processing module, the storage module, and the main control module are powered on. The pressure sensor is powered on and monitored every 15 minutes. When the underwater glider is on the surface, the Beidou positioning module is powered on. After the underwater glider enters the water, the Beidou module is powered off. The underwater signal acquisition, recording and processing system includes an underwater acoustic signal data receiving sensor, an underwater acoustic signal data conditioning and acquisition module, a signal processing module, a storage module, a main control module, a power management module and other auxiliary working modules; The other auxiliary working modules include a pressure sensor and a BeiDou positioning module.

2. The low-power design method for an underwater signal acquisition, recording, and processing system according to claim 1, characterized in that: The underwater glider in S2 performs a short-term mission for one week.

3. The low-power design method for an underwater signal acquisition, recording, and processing system according to claim 1, characterized in that: The underwater glider in S3 can perform long-duration missions for one week to one month.

4. The low-power design method for an underwater signal acquisition, recording, and processing system according to claim 1, characterized in that: The underwater mooring in S4 performs an ultra-long-duration mission for more than one month.

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